考虑制动盘温度场和应力场的摩擦副匹配性分析

The Matching Analysis of the Friction Pair Considering the Temperature Field and Stress Field of the Brake Disc

摘要: 对25Cr2MoVA、QT700-2和HT250三种材料的制动盘和粉末冶金、合成材料两种闸片进行配对，采用有限元软件对不同材料组合条件下的制动盘进行温度场和应力场仿真分析。结果表明：100 km/h两次紧急制动工况下25Cr2MoVA制动盘温度最低，HT250制动盘热应力最小。综合考虑材料本身耐受温度的能力和力学性能，25Cr2MoVA制动盘与粉末冶金闸片匹配性最佳。

Abstract: Three different types of brake discs, 25Cr2MoVA, QT700-2 and HT250 were matched with two different types of brake pads, powder metallurgy and composite material, and the temperature field and thermal stress field simulation analyses of the brake discs were conducted under different combination of materials by using FEA software. The results indicate that the temperature of the 25Cr2MoVA brake disc is the lowest and the thermal stress of the HT250 is the least under twice emergency braking condition in 100 km/h. The matching performance is the best between the 25Cr2MoVA brake disc and the powder metallurgy brake pad through consideration of the temperature resistance and mechanical properties of the material.